Though designed as temporary local government offices to a budget of only 2.3 million, the building was not to have a provisional character. Seven three-dimensional trussed girders span a width of 22.5 m without intermediate columns. Daylight enters via inflated ETFE rooflight cushions. Further membrane layers span between these strips to create translucent bays. An internal membrane over the trusses lends them a sculptural character. At the eaves, the roof covering is drawn down over the facade.